Sound mitigation for air core reactors

a technology of air core reactor and sound mitigation, which is applied in the direction of transformer/inductance noise damping, basic electric elements, electrical equipment, etc., can solve the problems of inability to physically access the reactor for maintenance activities, high cost of such structures, and serious irritant to the local population

Active Publication Date: 2016-08-02
SIEMENS ENERGY GLOBAL GMBH & CO KG
View PDF15 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Air core reactors are often located in populous areas, and the sound created by the reactors can be a serious irritant to the local population.
The cost of such structures is high, and they may inhibit physical access to the reactor for maintenance activities.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Sound mitigation for air core reactors
  • Sound mitigation for air core reactors
  • Sound mitigation for air core reactors

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012]While traditional solutions to mitigating the adverse effects of audible sound created by an air core reactor have focused on isolating the reactor from neighboring populations, the present inventors have innovatively looked to the source of the sound itself in order to reduce the amount of sound energy produced by the operation of the reactor. The inventors have recognized that prior art air core reactors have been designed on the basis of their electrical performance, but they are not optimized for their acoustic performance. The inventors have developed improvements in the design of such reactors in order to accomplish a reduction in the sound levels emanating from the device during power operation, thereby reducing or eliminating the need for supplemental sound barriers.

[0013]FIG. 2 is a partial cut-away view of a prior art air core reactor 10 illustrating components typical of air core reactors. The reactor 10 includes a series of cylindrically shaped, spaced-apart packag...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
frequenciesaaaaaaaaaa
thicknessaaaaaaaaaa
frequenciesaaaaaaaaaa
Login to view more

Abstract

An air core reactor (47) including a plurality of concentric conductor winding packages (44, 46) wherein a force (F+) generated by the interaction of current (+) flowing through one package and a magnetic field (42) generated by the reactor is out of phase (F−) with a force generated in another package, thereby effectively mitigating audible sound generated by power operation of the reactor. In one embodiment (FIG. 3), the out of phase force may be generated when at least one winding (38c, 37d) of one package (38) is configured to conduct a current (−) that is at least 10 degrees out of phase with a current (+) conducted by another package (40) or other windings (38a, 38b) of the reactor (36).

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application is the US National Stage of International Application No. PCT / CA2013 / 050529 filed Jul. 9, 2013 and claims benefit thereof, the entire content of which is hereby incorporated herein by reference. This application claims benefit of the 9 Jul. 2012 filing date of U.S. provisional patent application No. 61 / 669,317.FIELD OF THE INVENTION[0002]The present invention relates to dry type air core reactors of the type used in utility and power applications and, more particularly, to mitigating audible sound produced by such reactors.BACKGROUND OF THE INVENTION[0003]Air core reactors are inductive devices used in high voltage power transmission, distribution and industrial applications. Air core reactors are used for a variety of purposes, including for filtering out harmonics, as shunt devices which compensate for introduction of capacitive reactive power, and as devices which limit short circuit currents. Air core reactors are for...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(United States)
IPC IPC(8): H01F27/06H01F27/30H01F27/08H01F27/38H01F27/33H01F27/28H01F27/29
CPCH01F27/33H01F27/38H01F27/2823
Inventor LAU, TOM CHIU HUNGBEST, FABIANWONG, TERRY WAI CHEONGCHAN, WILLIE KIM FUNGALVES, SEANTONG, THONGSHARP, MICHAEL
Owner SIEMENS ENERGY GLOBAL GMBH & CO KG
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap